<div>
  <div class="search_container">
    <nz-input-group nzSearch nzSize="large" [nzAddOnAfter]="suffixButton">
      <input type="text" nz-input placeholder="请输入要搜索的真题"/>
    </nz-input-group>
    <ng-template #suffixButton>
      <button nz-button nzType="primary" nzSize="large" nzSearch>搜索试题</button>
    </ng-template>
  </div>
  <div class="contest_container">
    <app-contest-card></app-contest-card>
    <app-contest-card></app-contest-card>
  </div>
</div>
